<?php

class InventoryController extends Controller {

    /**
     * @var string the default layout for the views. Defaults to '//layouts/column2', meaning
     * using two-column layout. See 'protected/views/layouts/column2.php'.
     */
    public $layout = '//layouts/column2';

    /**
     * @return array action filters
     */
    public function filters() {
        return array(
            'accessControl', // perform access control for CRUD operations
            'postOnly + delete', // we only allow deletion via POST request
        );
    }

    /**
     * Specifies the access control rules.
     * This method is used by the 'accessControl' filter.
     * @return array access control rules
     */
    public function accessRules() {
        return array(
           
            array('allow', // allow admin user to perform 'admin' and 'delete' actions
                'actions' => array('admin', 'delete', 'purchase', 'autoComplete','index', 'view','create', 'update'),
                'users' => array('admin'),
            ),
            array('deny', // deny all users
                'users' => array('*'),
            ),
        );
    }

    /**
     * Displays a particular model.
     * @param integer $id the ID of the model to be displayed
     */
    public function actionView($id) {
        $list = Purchase::getRecentPurchases($id);
        $this->render('view', array(
            'model' => $this->loadModel($id), 'list' => $list
        ));
    }

    /**
     * Creates a new model.
     * If creation is successful, the browser will be redirected to the 'view' page.
     */
    public function actionCreate() {
        $model = new Inventory;

        // Uncomment the following line if AJAX validation is needed
        // $this->performAjaxValidation($model);

        if (isset($_POST['Inventory'])) {
            $model->attributes = $_POST['Inventory'];
            if (isset($model->price)) {
                $model->price = 0;
            }
            if (isset($model->stoke)) {
                $model->stoke = 0;
            }

            if ($model->save())
                $this->redirect(array('view', 'id' => $model->id));
        }

        $this->render('create', array(
            'model' => $model,
        ));
    }

    /**
     * Updates a particular model.
     * If update is successful, the browser will be redirected to the 'view' page.
     * @param integer $id the ID of the model to be updated
     */
    public function actionUpdate($id) {
        $model = $this->loadModel($id);

        // Uncomment the following line if AJAX validation is needed
        // $this->performAjaxValidation($model);

        if (isset($_POST['Inventory'])) {
            $model->attributes = $_POST['Inventory'];
            if ($model->save())
                $this->redirect(array('view', 'id' => $model->id));
        }

        $this->render('update', array(
            'model' => $model,
        ));
    }

    /**
     * Deletes a particular model.
     * If deletion is successful, the browser will be redirected to the 'admin' page.
     * @param integer $id the ID of the model to be deleted
     */
    public function actionDelete($id) {
        $this->loadModel($id)->delete();

        // if AJAX request (triggered by deletion via admin grid view), we should not redirect the browser
        if (!isset($_GET['ajax']))
            $this->redirect(isset($_POST['returnUrl']) ? $_POST['returnUrl'] : array('admin'));
    }

    /**
     * Lists all models.
     */
    public function actionIndex() {
        $dataProvider = new CActiveDataProvider('Inventory');
        $this->render('index', array(
            'dataProvider' => $dataProvider,
        ));
    }

    /**
     * Manages all models.
     */
    public function actionAdmin() {
        $model = new Inventory('search');
        $model->unsetAttributes();  // clear any default values
        if (isset($_GET['Inventory']))
            $model->attributes = $_GET['Inventory'];

        $this->render('admin', array(
            'model' => $model,
        ));
    }

    public function actionAutoComplete() {
        $term = trim($_GET['term']);

        if ($term != '') {
            // Note: Users::usersAutoComplete is the function you created in Step 2
            $items = Inventory::getItemsByNameForAutoComplete($term, 10);
            echo CJSON::encode($items);
            Yii::app()->end();
        }
    }

    public function actionPurchase() {
        $msg = "";
        $model = new Purchase;
        if (isset($_POST['Purchase'])) {

            try {
                $model->attributes = $_POST['Purchase'];
                $model->_by = Yii::app()->user->id;
                $date = new DateTime();
                $_date = $date->format('Y-m-d H:i:s');
                $model->date_at = $_date;
                $item=  Inventory::getItemById($model->item_id);
                if(!isset($item)){
                    throw new Exception("Inventry item not found");
                }
                if ($this->commitPurchase($model)) {
                    $msg = "saved...";
                } else {
                    $msg = "Unable to Commit the Purchase try again....!";
                }
            } catch (Exception $ex) {
                $msg = "Unable to Commit the Purchase try again....!";
            }
        }
        $this->render('purchase', array(
            'model' => $model, 'msg' => $msg
        ));
    }

    private function commitPurchase($purchase) {
        $transaction = Yii::app()->db->beginTransaction();
        $item = Inventory::model()->findByPk($purchase->item_id);
        $item->stoke = $item->stoke + $purchase->quantity;
        $purchase->save();
        $item->update();
        $transaction->commit();
        return true;
    }

    /**
     * Returns the data model based on the primary key given in the GET variable.
     * If the data model is not found, an HTTP exception will be raised.
     * @param integer $id the ID of the model to be loaded
     * @return Inventory the loaded model
     * @throws CHttpException
     */
    public function loadModel($id) {
        $model = Inventory::model()->findByPk($id);
        if ($model === null)
            throw new CHttpException(404, 'The requested page does not exist.');
        return $model;
    }

    /**
     * Performs the AJAX validation.
     * @param Inventory $model the model to be validated
     */
    protected function performAjaxValidation($model) {
        if (isset($_POST['ajax']) && $_POST['ajax'] === 'inventory-form') {
            echo CActiveForm::validate($model);
            Yii::app()->end();
        }
    }

}
